A population is a distinct group of individuals, whether that group comprises a nation or a group of people with a common characteristic. In statistics, a population is the pool of individuals from which a statistical sample is drawn for a study. Thus, any selection of individuals grouped by a common feature can be said to be a population.
What are the different types of population?
What are the different types of population? Types. There are three types of population pyramids: expansive, constrictive, and stationary. Expansive population pyramids depict populations that have a larger percentage of people in younger age groups. Populations with this shape usually have high fertility rates with lower life expectancies.
What type of people make up most of Perus population?
The bulk of Peru's Asian population is descended from Chinese and Japanese immigrants. Notably, Alberto Fujimori, Peru scandal hit President from 1990 to 2000 was of Japanese descent. Afro-Peruvians make up around 1-2% of the population and are largely descended from slaves transported to Peru in the 18th and 19th centuries.
What are three types of population density?
Population Density: Classification Of The Spatial Distribution Of Population Density
- Areas of Extremely Low Density: Areas having 100 persons per sq km and less than that are included in this class. ...
- Areas of Low Density: Areas having population density of 101 to 250 persons per sq km are included in this class. ...
- Areas of Moderate Density: This class includes those areas which are having 251 to 500 persons per sq km. ...
What are the three types of population growth?
What are the three types of population growth? And while every population pyramid is unique, most can be categorized into three prototypical shapes: expansive (young and growing), constrictive (elderly and shrinking), and stationary (little or no population growth). Let’s take a deeper dive into the trends these three shapes reveal about a ...
What are the two types of population?
population can be of two types that are :single species population and mixed or multiple species population. Single species populations are populations where only one type of organisms are found. Mixed or multiple species population is a population where more than two types of species are found.
What are the 3 types of population?
There are generally three types of population pyramids created from age-sex distributions-- expansive, constrictive and stationary.
What is called population?
A population is defined as a group of individuals of the same species living and interbreeding within a given area. Members of a population often rely on the same resources, are subject to similar environmental constraints, and depend on the availability of other members to persist over time.
What are the main population types?
There are three types of population pyramids: expansive, constrictive, and stationary. Expansive population pyramids depict populations that have a larger percentage of people in younger age groups. Populations with this shape usually have high fertility rates with lower life expectancies.
What is population in brief?
A population is a distinct group of individuals, whether that group comprises a nation or a group of people with a common characteristic. In statistics, a population is the pool of individuals from which a statistical sample is drawn for a study.
What is population and its characteristics?
Demography is the study of a population, the total number of people or organisms in a given area. Understanding how population characteristics such as size, spatial distribution, age structure, or the birth and death rates change over time can help scientists or governments make decisions.
What type of word is population?
Population is a noun - Word Type.
What is a population Wikipedia?
A population is the number of living people that live together in the same place. A city's population is the number of people living in that city. These people are called inhabitants or residents. The population includes all individuals that live in that certain area.
What is population essay?
500+ Words Essay on Population. Population refers to the total number of beings living in a particular area. Population helps us get an estimate of the number of beings and how to act accordingly. For instance, if we know the particular population of a city, we can estimate the number of resources it needs.
What is population in statistics?
In statistics, a population is the pool of individuals from which a statistical sample is drawn for a study. Thus, any selection of individuals grouped together by a common feature can be said to be a population.
What are the Greek letters for population mean and standard deviation?
The population mean and population standard deviation are represented by the Greek letters µ and σ , respectively.
Why do statisticians and researchers prefer to know the characteristics of every entity in a population?
Statisticians and researchers prefer to know the characteristics of every entity in a population in order to draw the most precise conclusions possible. This is impossible or impractical most of the time, however, since population sets tend to be quite large.
What is a sample in statistics?
A sample is a random selection of members of a population. It is a smaller group drawn from the population that has the characteristics of the entire population. The observations and conclusions made against the sample data are attributed to the population as a whole.
What is standard deviation in statistics?
The standard deviation is the variation in the population that is inferred from the variation in the sample. When the standard deviation is divided by the square root of the number of observations in the sample, the result is referred to as the standard error of the mean .
Who believed that the population will always outpace the food supply?
The issue of overpopulation has been debated since at least 1786, when economist Thomas Malthus published his theory that the growth of the population will always outpace the growth in the food supply. This theory is known as Malthusianism. 11 . Malthus viewed the problem as an over-stretching of resources.
Is a sample a statistically significant portion of a population?
A sample is a statistically significant portion of a population, not an entire population. For this reason, a statistical analysis of a sample must report the approximate standard deviation, or standard error, of its results from the entire population. Only an analysis of an entire population would have no standard error.
What is the definition of population?
In biology, a population is a number of all the organisms of the same group or species who live in a particular geographical area and are capable of interbreeding. The area of a sexual population is the area where inter-breeding is possible between any pair within the area ...
What is a population in biology?
In biology, a population is a number of all the organisms of the same group or species who live in a particular geographical area and are capable of interbreeding.
How can alleles be converted to genotypes?
Under this state, allele ( gamete) frequencies can be converted to genotype ( zygote) frequencies by expanding an appropriate quadratic equation , as shown by Sir Ronald Fisher in his establishment of quantitative genetics.
What was the reason for the rapid growth of the population in the last 50 years?
The last 50 years have seen a yet more rapid increase in the rate of population growth due to medical advances and substantial increases in agricultural productivity , particularly beginning in the 1960s, made by the Green Revolution.
What is a sexual population?
In population genetics a sexual population is a set of organisms in which any pair of members can breed together. This means that they can regularly exchange gametes to produce normally-fertile offspring, and such a breeding group is also known therefore as a gamodeme. This also implies that all members belong to the same species.
What is the process of determining the population of a city?
Population, in simpler terms, is the number of people in a city or town, region, country or world; population is usually determined by a process called census (a process of collecting, analyzing, compiling and publishing data).
How long after the world population reached 5 billion in 1987 did the population reach 5.5 billion in 1993?
This was about 12 years after the world population reached 5 billion in 1987, and six years after the world population reached 5.5 billion in 1993. The population of countries such as Nigeria is not even known to the nearest million, so there is a considerable margin of error in such estimates.
What is population in biology?
What is Population? A discrete assemblage of entities with identifiable characteristics such as people, animals with the objective of analysis and data collection is called a population. It consists of a similar group of species who dwell in a particular geographical location with the capacity to interbreed.
What is a metapopulation?
A metapopulation is when individuals in local populations scatter between other local populations.
Why are most of the population not stable?
Most of the populations are not stable due to various physical factors prevailing in the environment which act as limiting factors against exponential growth of the population. A graph that displays the age-sex distribution of a country’s human population at a given frame of time is referred to as a population pyramid.
Expansive
Expansive population pyramids are used to describe populations that are young and growing. They are often characterized by their typical ‘pyramid’ shape, which has a broad base and narrow top.
Constrictive
Constrictive population pyramids are used to describe populations that are elderly and shrinking. Constrictive pyramids can often look like beehives and typically have an inverted shape with the graph tapering in at the bottom.
Stationary
Stationary, or near stationary, population pyramids are used to describe populations that are not growing. They are characterized by their rectangular shape, displaying somewhat equal percentages across age cohorts that taper off toward the top.
What does GP mean in statistics?
1. General population (GP) = members of the general population who are. not eligible to respond i n view of the resear ch goals + participants in the target. population (TP) who cannot participate for several reasons + accessible population. (AP) 2. TP = GP – members of the GP who are not eligible to respond in view.
Is it herculean to appropriately define a population?
herculean indeed for researchers to appropriately define their population when the concepts of. general, target and accessible population are not well understood by them; especially in view. of the fact that knowledge of one or more of these concepts would form the basis for effective. population definition.
Population Concept
Population Types
- In principle, one can distinguish between human populations and animal populations or plant populations , depending on the nature of the individuals to be studied. In that sense, there would be as many types of populations as there are categories of them. On the other hand, populations can be classified as follows, based on their biological conside...
Growth and Decline
- Populations, whatever their type, tend to grow (increase in the total number of individuals) or decrease (decrease in the total number of individuals), according to conditions that can be studied. They are between them: 1. Availability of resources. Populations settled in a place where resources are more available (food, space, etc.) will have an important element in their favor to g…
Natality and Mortality
- Two rates or central tendencies that constitute the growth and decrease of populationsare the birth of new individuals and their death. These are processes that occur in all populations, as one generation replaces the other, but not in the exact same proportion. To understand this process is on the one hand the concept of birth rate: the number of individuals bornin a given period. On th…
Population Density
- Population density (or relative population) is a calculation that averages the number of people and the space available for them to live. To do this, the total number of inhabitants is divided by the surface area of the territory (inhab/km 2), which yields a figure that will indicate how densely populated a location is. If the density is high, the inhabitants have little space for themselves, sin…
Population Pyramid
- The number of individuals of each sex and agegroup in a population is commonly represented in a population pyramid, that is, a graph that places the sex groups and number of individuals on an X axis, and age on a Y axis. Thus, a joint visualization of the population distribution is obtainedbased on their sex (men on the right and women on the left) and age, and depending o…
Economic Population
- The analysis of the populations from an economic point of view shows two types of inhabitants: 1. Economically active population. Those inhabitants who are inserted in the productive dynamics, that is, who are in physical and mental conditions to work , even if they are vacant at the moment. Also called Working Age Population. 2. Economically inactive population. Those inhabi…
Population Censuses
- Censuses are the instrument par excellence to register and learn about a population, especially human populations . It is done through the enumeration of the inhabitants and the detail of their characteristics, from a social, economic, family perspective, etc. All this data is then processed and fed into the elaboration of statistics, which allows drivers and analysts of society…
The World Population
- The human population as a whole is, according to the 2009 census, about 7 billion inhabitantsdistributed throughout the earth’s surface, in the 194 recognized countries of the planet. If one considers that in 1804 we were approximately a billion, and that in 1974 we already reached 4 billion, it will be seen that we are a growing total population, but at a slower and slowe…
Population Examples
- Examples of population in its various meanings can be the population of common cockroaches that exists in the kilometers of pipes in your city, or the total inhabitants of the neighborhood where you live. One can also speak of population to refer to the individuals in the electoral register or voterregistration , or to those who voted according to one or another politica…
What Is population?
- A population is a distinct group of individuals, whether that group comprises a nation or a group of people with a common characteristic. In statistics, a population is the pool of individuals from which a statistical sample is drawn for a study. Thus, any selection of individuals grouped by a common feature can be said to be a population. A sample...
Understanding Population
- In most uses, the word population implies a group of people or at least a group of living beings. However, statisticians refer to whatever group they are studying as a population. The population of a study might be babies born in North America in 2021, the total number of tech startups in Asia since the year 2000, the average height of all accounting examination candidates, or the m…
How to Calculate A Population
- A population can be defined narrowly, such as the number of newborn babies in North America with brown eyes, the number of startups in Asia that failed in less than three years, the average height of all female accounting examination candidates, or the mean weight of all U.S. taxpayers over age 30. The science of political polling offers a good example of the difficulty of selecting …
Population Samples
- A sample is a random selection of members of a population. It is a smaller group drawn from the population that has the characteristics of the entire population. The observations and conclusions made against the sample data are attributed to the population as a whole. The information obtained from the statistical sample allows statisticians to develop hypotheses about the larger …
Real-World Examples of Population
- Population statistics inform public policy and business decisions. Some examples: 1. The World Bank is an international organization that aims to reduce global poverty by lending money to poor nations for projects that improve their economies and raise their overall standard of living. To pinpoint where help is most needed, the Bank conducts an authoritative, country-by-country hea…
The Bottom Line
- Each of us is an individual component of many populations. In addition to being members of the human population of Earth and citizens of a nation, we are members of many sub-populations based on age, gender, income, health status, and many other factors. When statisticians attempt to ascertain a fact or facts about any of those sub-populations, they typically rely on a sample p…
Overview
Population typically refers to the number of people in a single area, whether it be a city or town, region, country, continent, or the world. Governments typically quantify the size of the resident population within their jurisdiction using a census, a process of collecting, analysing, compiling, and publishing data regarding a population.
Perspectives of various disciplines
In sociology and population geography, population refers to a group of human beings with some predefined criterion in common, such as location, race, ethnicity, nationality, or religion. Demography is a social science which entails the statistical study of populations.
In ecology, a population is a group of organisms of the same species who inhabit the same particular geographical area and are capable of interbreeding. The area of a sexual population is t…
World human population
According to the United States Census Bureau the world's population was about 7.5 billion in 2019 and that the 7 billion number was surpassed on 12 March 2012. According to a separate estimate by the United Nations, Earth's population exceeded seven billion in October 2011, a milestone that offers unprecedented challenges and opportunities to all of humanity, according to U…
See also
• Community (ecology)
• Human overpopulation
• List of countries by population
• Lists of organisms by population
External links
• United Nations Population Division
• CICRED homepage a platform for interaction between research centres and international organizations, such as the United Nations Population Division, UNFPA, WHO and FAO.
• Population Reference Bureau analyzes demographic data and research providing objective, accurate, and up-to-date population information in accessible formats.